body {
  background-image: url("https://upload.wikimedia.org/wikipedia/en/1/1d/Countdown_titles_2012.png");
  background-size: cover;
  color: yellow;
}

button {
  padding: 3px;
  border: red 5px solid;
  background-color: blue;
  color: white;
  font-weight: bold;
  font-size: 3rem;
  margin-right: 5px;
}